I was testing the race_s set with raceabout and i find it pretty good. After changing the brakes (600\57) and tyre pressures (140\190) with slight wheel aligments, I was doing quite nice pace 2:51.xx. I'm sure about that it can do 2:50 easily and the tires can hold it for long races too without any problems
btw I thought the "limited setup" option was bad idea, but now I change my mind